Cellulose wachilengedwe ndiye polysararide kwambiri mwachilengedwe, ndipo zolengedwa zake ndizolemera kwambiri. Tekinoloje yosinthira yamakono ya cellulose makamaka imayang'ana kwambiri komanso kutulutsa. Carboxymethytation * Katswiri wamtunduwu. Carboxymethyl cellulose (cmc) imapezeka pambuyo pa carbobobotthymetion of cellulose. Njira yake yothetsera matenda imakhala ndi ntchito za kukula, mafilimu, zotsatsa, kusungidwa ndi mapepala, ndi kuyimitsidwa kwa mapepala, ndi imodzi mwa cellulose yofunikira kwambiri.
katundu wathupi
Sodium Carboxymethylcellulose (CMC) ndi ethersose. Maonekedwe ake ndi oyera kapena achikasu achikasu a fiberdeleleler kapena ufa woyera, wopanda fungo, wosaneneka, komanso wopanda poizoni; Imasungunuka mosavuta mu madzi ozizira kapena otentha ndikupanga mamasukidwe ena. yankho lowonekera. Njira yothetsera vutoli ndi yosagwirizana kapena pang'ono mchere, influble mu ethanol, etherpanol, isombogenol, acetone ndi ena okhazikika, koma solble mu 60% ethanol kapena acetone. Ndi hygroscopic ndi khola ku kuwala ndi kutentha. Makulidwe amachepetsa ndi kuchuluka kwa kutentha. Njira yothetsera vutoli ili yokhazikika pa pH 2-10. Pamene pH ndiyotsika kuposa 2, zolimba zimapangidwa. Pamene pH ili yokwera kuposa 10, ma virucy akuchepa. Kutentha kotsitsa ndi 227 ° C, Kutentha kwa mpweya ndi 252 ° C, ndipo kusokonezeka kwa 2% yam'madzi ndi 71m / n.
mankhwala
Imapezeka pochiza cellulose yokhala ndi carboxymethyl oyimira ma cellulose ndi sodium hydroxide kupanga ma cellulose, kenako kubwereza monochloroortic asidi. Chigawo cha glucose chomwe chimapanga ma cellulose ali ndi magulu atatu a hydroxyl omwe amatha kusinthidwa, kotero zopangidwa ndi madigiriini osiyanasiyana omwe asinthidwa. Pafupifupi, 1Mm wa carboxymethyl gulu lililonse la kulemera kwamadzi ndikuchepetsa acid, koma amatha kutsekemera ndikugwiritsa ntchito ion kusinthidwa kwa ma chromatography. Carboxymethyl PKA ili pafupifupi 4 m'madzi oyera ndi pafupifupi 3.5 mu 0,5mol / l nacl. Ndilo lofooka la acidic ndipo nthawi zambiri limagwiritsidwa ntchito polekanitsa ndi mapuloteni osalowerera komanso oyambira pa pH> 4. Magulu oposa 40% a ma hydroxyl amasinthidwa ndi magulu a Carboxymethyl, omwe amatha kusungunuka m'madzi kuti apange yankho lokhazikika la colloidal.
Cholinga chachikulu
Carboxymethylcellulose (cmc) ndi ufa wopanda poizoni, wopanda fungo loyera ndipo imasungunuka mosavuta m'madzi. Njira yake yamadzimadzi ndi yosagwirizana kapena alkaline yowoneka bwino yamadzi, imasungunuka m'madzi ena osungunuka madzi ndikutenthetsedwa, komanso ofesa okhazikika monga Ethanol. CMC itha kugwiritsidwa ntchito ngati bind, thickener, kuyimitsa wothandizira, emulsifier, starster, okhazikika, etc.
Sodium Carboxymethmethmethmethmethyl cellulose (cmc) ndiye chinthu chomwe chili ndi mphamvu yayikulu kwambiri, kugwiritsa ntchito mosavuta komanso kugwiritsidwa ntchito kodziwika bwino pakati pa cellulodium glutate ".
1. Amagwiritsidwa ntchito mu mafuta ndi masitolo obowola gasi, kukumba bwino komanso ntchito zina
Matope okhala ndi ma cmc-cmc amatha kupanga khoma la chitsime chimapanga keke yochepetsetsa komanso yolimba yofooketsa yotsika kwambiri, ndikuchepetsa kutaya madzi.
- Pambuyo poti ma cmc ku matope, chomangira chobowola chimatha kutulutsa mokakamiza, kuti matope atulutse mafuta okutidwa mu dzenje la matope.
③ Matope okumba, monga kuyimitsidwa kwina ndi kufalikira, ali ndi alumali. Kuchulukitsa masentimita kumatha kupangitsa kuti ikhale yokhazikika ndikuyatsa moyo wa alumali.
Matope okhala ndi matope omwe ali ndi masentimita sakhudzidwa ndi nkhungu, motero sikofunikira kusunga mtengo wambiri ndikugwiritsa ntchito zoteteza.
- ili ndi CMC monga wothandizira mankhwalawo kuti abowole matope akutulutsa madzi, omwe amatha kukana kuwonongeka kwa mchere wambiri wosungunuka.
Matope okhala ndi masentimita ali ndi bad bwino ndipo amatha kuchepetsa kuchepa kwa madzi ngakhale ngati matenthedwe ali pamwamba 150 ° C.
CMC yokhala ndi mafayilo apamwamba komanso kuchuluka kwa zolowa m'malo oyenera matope okhala ndi kapa kachulukidwe kakang'ono, ndipo cmc yokhala ndi mafayilo otsika komanso kuchuluka kwa zoopsa. Kusankha kwa CMC kuyenera kutsimikiza mtima monga momwe matope, dera, komanso kuya.
2. Amagwiritsidwa ntchito mu nsalu, kusindikiza ndi kupatsa mafakitale. M'makampani opanga malembawo, cmc amagwiritsidwa ntchito ngati wogwirizira wa thonje la thonje, ubweya wa silika, fiber fiber, zophatikizidwa ndi zida zina zamphamvu;
3. Kugwiritsidwa ntchito m'makampani ogulitsa mapepala atha kugwiritsidwa ntchito ngati pepala losalala ndi kupanikizika kwa ogulitsa mapepala. Kuphatikiza 0.1% mpaka 0.3% ya cmc mu zamkati kumatha kuwonjezera mphamvu ya pepala ndi 40%, kuwonjezera kuchuluka kwa 50%, ndikuwonjezera kuchuluka kwa maulendo 4 mpaka 5.
4. CMC itha kugwiritsidwa ntchito ngati dothi lotupa mukamawonjezera zotupa; Mankhwala amtsiku ndi tsiku monga makampani opanga mano a cmc glycrol magazi amagwiritsidwa ntchito ngati chitsulo cham'madzi; Makampani opanga mankhwala amagwiritsidwa ntchito ngati thiccener ndi emulsifier; Mgwirizano wa CMC Aquaous umagwiritsidwa ntchito ngati chofunda chitayamba kukulirani migodi ndi kupitilira apo.
5. Itha kugwiritsidwa ntchito ngati chomatira, puluewi, kuyimitsa ntchito ya glaze, utoto wokonza utoto, etc. mu malonda a ceramic.
6. Amagwiritsidwa ntchito pomanga kuti athandize kusungidwa kwamadzi ndi mphamvu
7.. Makampani ogulitsa zakudya amagwiritsa ntchito cmc ndi cholowa m'malo mwake ngati wotchinga cha ayisikilimu, zakudya chakudya, Zakudyazi, ndi chiwombankhanga cha nyerere. Kwa otsatsa, mangani kapena othandizira.
8. Makampani ogulitsa mankhwala amasankha CMC ndi mamasukidwe oyenera ngati binder, othandiza mapiritsi, ndikusiya Mtumiki wa kuyimitsidwa, etc.
Post Nthawi: Feb-21-2025